改性聚乙烯醇偏光膜的制备及性能研究

Investigation of Preparation and Property of Modified PVA Polarizing Film

以聚乙烯醇（ＰＶＡ）为原料，制备了改性的ＰＶＡ含碘（ｍＰＶＡ－Ｉ）和ＰＶＡ含双向色性染料（ｍｐＶＡ－Ｄ）两类偏光膜，前者的偏光性能明显优于后者。ｍＰＶＡ－Ｉ偏光膜较国内商品ＰＶＡ含碘偏光膜（ｃＰＶＡ－Ｉ）有明显的优点，在偏光性能相近的条件下。抗湿、抗热性能好。用光电子能谱对膜表层测试表明，Ｂ、Ｃｏ、Ｎｉ浓度是影响其性能的原因。

The PVA polarizing films containingiodine or dye were prepared and studied.A good heatresistance,moisture-beat resistance and excellentpolarizlng properties were observed for the filmcontaining iodine。The surface of the film wascharacterized by visible spectra and ESCA.Theresults confirmed that the properties of the film wereeffected by B,and Co Ni concentration。